CVE-2026-111817
CVE-2026-111817 · Apache Traffic Server: Dropping chunked trailers stalls a passthrough transfer until timeout
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Apache Traffic Server can stall a chunked transfer that it passes through with its trailers removed (proxy.config.http.drop_chunked_trailers) until the connection times out, because it waits for the trailer bytes it has already dropped. Trailer dropping is on by default in 10.x. In 8.1.11 and 9.2.x it is off by default, and those versions are affected only if it is enabled. This issue affects Apache Traffic Server: 8.1.11, from 9.2.5 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 10.1.5 or 10.2.1, which fix the issue.
CVSS 6.9 · Medium · EPSS 0.3%
- Published
- Updated
Stack: system
Affected products and versions
apache traffic server
- Versions
- 8.1.11: Affected (semver)
- ≥ 9.2.5, ≤ 9.2.15: Affected (semver)
- ≥ 10.0.0, ≤ 10.1.4: Affected (semver)
- 10.2.0: Affected (semver)
No fix published
trafficserver Debian:12
- Versions
- 9.2.0+ds-2
- 9.2.0+ds-2+deb12u1
- 9.2.1+ds-1
- 9.2.2+ds-1
- 9.2.3+ds-1
- 9.2.3+ds-1+deb12u1
- 9.2.4+ds-0+deb12u1
- 9.2.4+ds-1
- 9.2.4+ds-2
- 9.2.5+ds-0+deb12u1
- 9.2.5+ds-0+deb12u2
- 9.2.5+ds-0+deb12u3
- 9.2.5+ds-0+deb12u4
- 9.2.5+ds-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
trafficserver Ubuntu:16.04:LTS
- Versions
- 5.3.0-2ubuntu1
- 5.3.0-2ubuntu2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
trafficserver Ubuntu:18.04:LTS
- Versions
- 7.0.0-5
- 7.1.2+ds-2
- 7.1.2+ds-2build1
- 7.1.2+ds-3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
trafficserver Ubuntu:Pro:20.04:LTS
- Versions
- 8.0.5+ds-1
- 8.0.5+ds-2
- 8.0.5+ds-2build1
- 8.0.5+ds-2ubuntu1
- 8.0.5+ds-3
- 8.0.5+ds-3ubuntu0.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
trafficserver Ubuntu:Pro:22.04:LTS
- Versions
- 8.1.1+ds-1.1
- 9.1.1+ds-2build1
- 9.1.1+ds-2ubuntu0.1~esm1
- 9.1.1+ds-2ubuntu0.1
- 9.1.1+ds-2ubuntu0.1+esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
trafficserver Ubuntu:24.04:LTS
- Versions
- 9.2.1+ds-1build1
- 9.2.2+ds-1
- 9.2.3+ds-1
- 9.2.3+ds-1+deb12u1
- 9.2.3+ds-1+deb12u1build1
- 9.2.3+ds-1+deb12u1build3
- 9.2.3+ds-1+deb12u1build4
- 9.2.3+ds-1+deb12u1ubuntu0.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published